The Next Chapter in MOF Pillaring Strategies: Trigonal Heterofunctional Ligands To Access Targeted High-Connected Three Dimensional Nets, Isoreticular Platforms

• Published in: Journal of the American Chemical Society Vol. 133; no. 44; pp. 17532 - 17535
• Main Authors: Eubank, Jarrod F, Wojtas, Lukasz, Hight, Matthew R, Bousquet, Till, Kravtsov, Victor Ch, Eddaoudi, Mohamed
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 09.11.2011
• Subjects: Crystallography, X-Ray; Ligands; Metals - chemistry; Models, Molecular; Organometallic Compounds - chemistry; Phthalic Acids - chemistry
• ISSN: 0002-7863; 1520-5126
• DOI: 10.1021/ja203898s

A new pillaring strategy, based on a ligand-to-axial approach that combines the two previous common techniques, axial-to-axial and ligand-to-ligand, and permits design, access, and construction of higher dimensional MOFs, is introduced and validated. Trigonal heterofunctional ligands, in this case isophthalic acid cores functionalized at the 5-position with N-donor (e.g., pyridyl- or triazolyl-type) moieties, are designed and utilized to pillar pretargeted two-dimensional layers (supermolecular building layers, SBLs). These SBLs, based on edge transitive Kagomé and square lattices, are cross-linked into predicted three-dimensional MOFs with tunable large cavities, resulting in isoreticular platforms.